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Ecological, phytosanitary, and agronomic aspects of target weeds for biological control studies in Antioquia, Colombia Acta Agron. (Palmira)
Mira Taborda,Yerly Dayana; Castañeda Sánchez,Darío Antonio; Morales Osorio,Juan Gonzalo; Patiño Hoyos,Luis Fernando.
ABSTRACT Biological control as part of integrated weed management represents an emerging and promising method to minimize the use and impact of herbicides on the environment. The objective of this research was to determine the ecological, phytosanitary, and agronomic status of weeds associated with crops in Antioquia, Colombia, and their potential to be chosen as candidates for biological control studies using pathogenic fungi. The research was carried out through a sampling of weeds in 35 agricultural farms, distributed in 11 municipalities and 10 different crops, on which population ecological variables such as frequency and dominance were evaluated; phytosanitary variables such as incidence and severity of foliar fungal symptoms; as well as some...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biocontrol; Phytosociology; Weed ecology; Weed biology; Weed management.
Ano: 2022 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122022000200195
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Phenology, fruit set and dispersal of Cordia multispicata Cham., an important weed shrub of abandoned pastures in eastern Amazonia Rev. Bras. Bot.
Vieira,Ima Célia Guimarães; Silva,José Maria Cardoso da.
ABSTRACT - (Phenology, fruit set and dispersal of Cordia multispicata Cham., an important weed shrub of abandoned pastures in eastern Amazonia). The reproductive ecology of the distylous tropical shrub Cordia multispicata was studied in an abandoned pasture in Paragominas County , Pará state, Brazil. It is a common species in the Amazon basin where it occurs as a weed in open and disturbed habitats. C. multispicata has many flowers per inflorescence (85 ± 12) but 84% abort before fertilization. Flowering occurs throughout the year. Fruits are small, with a red fleshy pericarp (skin-pulp) attractive to birds. Fruit set is lower during the dry season (less than 30%) and higher during the rainy season when there are many visits of insects to the flowers....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abandoned pastures; Amazonia; Cordia multispicata; Reprocuctive biology; Weed ecology.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100005
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